52 Works

Data from: Genetic dissection of hybrid male sterility across stages of spermatogenesis

Denise J. Schwahn, Richard J. Wang, Michael A. White & Bret A. Payseur
Hybrid sterility is a common form of reproductive isolation between nascent species. Although hybrid sterility is routinely documented and genetically dissected in speciation studies, its developmental basis is rarely examined, especially in generations beyond the F1. To identify phenotypic and genetic determinants of hybrid male sterility from a developmental perspective, we characterized testis histology in 312 F2 hybrids generated by intercrossing inbred strains of Mus musculus domesticus and M. m. musculus, two subspecies of house...

Data from: Formation of a recent hybrid zone offers insight to the geographic puzzle and maintenance of species boundaries in musk turtles

Peter A. Scott, Travis C. Glenn & Leslie J. Rissler
Speciation is the result of an accumulation of reproductive barriers between populations, pinpointing these factors is often difficult. However, hybrid zones can form when these barriers are not complete, especially when lineages come into contact in intermediate or modified habitats. We examine a hybrid zone between two closely related riverine turtle species, Sternotherus depressus and S. peltifer, and use ddRAD sequencing to to understand how this hybrid zone formed and elucidate genomic patterns of reproductive...

Data from: High genomic diversity and candidate genes under selection associated with range expansion in eastern coyote (Canis latrans) populations

Elizabeth Heppenheimer, Kristin E. Brzeski, Joseph W. Hinton, Brent R. Patterson, Linda Y. Rutledge, Alexandra L. DeCandia, Tyler Wheeldon, Steven R. Fain, Paul A. Hohenlohe, Roland Kays, Bradley N. White, Michael J. Chamberlain & Bridgett M. VonHoldt
Range expansion is a widespread biological process, with well described theoretical expectations for the genomic outcomes accompanying the colonization of novel ranges. However, comparatively few empirical studies address the genome-wide consequences associated with the range expansion process, particularly in recent or on-going expansions. Here, we assess two recent and distinct eastward expansion fronts of a highly mobile carnivore, the coyote (Canis latrans), to investigate patterns of genomic diversity and identify variants that may have been...

Data from: A fast-evolving X-linked duplicate of importin-α2 is overexpressed in sex-ratio drive in Drosophila neotestacea

Kathleen E. Pieper, Robert L. Unckless & Kelly A. Dyer
Selfish genetic elements that manipulate gametogenesis to achieve a transmission advantage are known as meiotic drivers. Sex-ratio X-chromosomes (SR) are meiotic drivers that prevent the maturation of Y-bearing sperm in male carriers to result in the production of mainly female progeny. The spread of an SR chromosome can affect host genetic diversity and genome evolution, and can even cause host extinction if it reaches sufficiently high prevalence. Meiotic drivers have evolved independently many times, though...

Data from: Context-dependent costs and benefits of tuberculosis resistance traits in a wild mammalian host

Hannah F. Tavalire, Brianna R. Beechler, Peter E. Buss, Erin E. Gorsich, Eileen G. Hoal, Nikki Le Roex, Johannie M. Spaan, Robert S. Spaan, Paul D. Van Helden, Vanessa O. Ezenwa & Anna E. Jolles
Disease acts as a powerful driver of evolution in natural host populations, yet individuals in a population often vary in their susceptibility to infection. Energetic trade-offs between immune and reproductive investment lead to the evolution of distinct life-history strategies, driven by the relative fitness costs and benefits of resisting infection. However, examples quantifying the cost of resistance outside of the laboratory are rare. Here, we observe two distinct forms of resistance to bovine tuberculosis (bTB),...

Data from: Temperature drives Zika virus transmission: evidence from empirical and mathematical models

Blanka Tesla, Leah R. Demakovsky, Erin A. Mordecai, Sadie J. Ryan, Matthew H. Bonds, Calistus N. Ngonghala, Melinda A. Brindley & Courtney C. Murdock
Temperature is a strong driver of vector-borne disease transmission. Yet, for emerging arboviruses we lack fundamental knowledge on the relationship between transmission and temperature. Current models rely on the untested assumption that Zika virus responds similarly to dengue virus, potentially limiting our ability to accurately predict the spread of Zika. We conducted experiments to estimate the thermal performance of Zika virus (ZIKV) in field-derived Aedes aegypti across eight constant temperatures. We observed strong, unimodal effects...

Data from: Estimating environmental suitability

John M. Drake & Robert L. Richards
Methods for modeling species’ distributions in nature are typically evaluated empirically with respect to data from observations of species occurrence and, occasionally, absence at surveyed locations. Such models are relatively “theory‐free.” In contrast, theories for explaining species’ distributions draw on concepts like fitness, niche, and environmental suitability. This paper proposes that environmental suitability be defined as the conditional probability of occurrence of a species given the state of the environment at a location. Any quantity...

Data from: Transcriptomic analysis of skin pigmentation variation in the Virginia opossum (Didelphis virginiana).

Sergio F. Nigenda-Morales, Yibo Hu, James Beasley, Hugo A. Ruiz-Piña, David Valenzuela-Galván, Robert K. Wayne & James C. Beasley
Skin and coat pigmentation are two of the best-studied examples of traits under natural selection given their quantifiable fitness interactions with the environment (e.g. camouflage) and signaling with other organisms (e.g. warning coloration). Previous morphological studies have found that skin pigmentation variation in the Virginia opossum (Didelphis virginiana) is associated with variation in precipitation and temperatures across its distribution range following Gloger’s rule (lighter pigmentation in temperate environments). To investigate the molecular mechanism associated with...

Data from: Simultaneous radiation of bird and mammal lice following the K-Pg boundary

Kevin P. Johnson, Nam-Phuong Nguyen, Andrew D. Sweet, Bret M. Boyd, Tandy Warnow & Julie M. Allen
The diversification of parasite groups often occurs at the same time as the diversification of their hosts. However, most studies demonstrating this concordance only examine single host-parasite groups. Multiple diverse lineages of ectoparasitic lice occur across both birds and mammals. Here we describe the evolutionary history of lice based on analyses of 1,107 single copy orthologous genes from sequenced genomes of 46 species of lice. We identify three major diverse groups of lice: one exclusively...

Data from: Private land conservation has landscape-scale benefits for wildlife in agroecosystems

John M. Yeiser, John J. Morgan, Danna L. Baxley, Richard B. Chandler & James A. Martin
Private lands contain much of the world's biodiversity. Conservation of private land, especially agricultural land, is urgent yet challenging because of the diverse priorities of landowners. Local effects of farmland conservation programmes have been evaluated thoroughly, but population-level response to these programmes may depend on effects that extend beyond targeted land parcels. We investigated the landscape-scale effects of a grassland conservation initiative, the Conservation Reserve Enhancement Program (CREP), on a socially and economically important gamebird,...

Data from: RRapid global spread of wRi-like Wolbachia across multiple Drosophila

Michael Turelli, Brandon S. Cooper, Kelly M. Richardson, Paul S. Ginsberg, Brooke Peckenpaugh, Chenling X. Antelope, Kevin J. Kim, Michael R. May, Antoine Abrieux, Derek A. Wilson, Michael J. Bronski, Brian R. Moore, Jian-Jun Gao, Michael B. Eisen, Joanna C. Chiu, William R. Conner & Ary A. Hoffmann
Maternally transmitted Wolbachia, Spiroplasma and Cardinium bacteria are common in insects, but their interspecific spread is poorly understood. Endosymbionts can spread rapidly within host species by manipulating host reproduction, as typified by the global spread of wRi Wolbachia observed in Drosophila simulans. However, because Wolbachia cannot survive outside host cells, spread between distantly related host species requires horizontal transfers that are presumably rare. Here we document spread of wRi-like Wolbachia among eight highly diverged Drosophila...

Data from: Migratory behavior predicts greater parasite diversity in ungulates

Claire S. Teitelbaum, Shan Huang, Richard J. Hall & Sonia Altizer
Long-distance animal movements can increase exposure to diverse parasites, but can also reduce infection risk through escape from contaminated habitats or culling of infected individuals. These mechanisms have been demonstrated within and between populations in single-host/single-parasite interactions, but how long-distance movement behaviors shape parasite diversity and prevalence across host taxa is largely unknown. Using a comparative approach, we analyze the parasite communities of 93 migratory, nomadic, and resident ungulate species. We find that migrants have...

Data from: Phenological responses to multiple environmental drivers under climate change: insights from a long-term observational study and a manipulative field experiment

Susana M. Wadgymar, Jane E. Ogilvie, David W. Inouye, Arthur E. Weis & Jill T. Anderson
• Climate change has induced pronounced shifts in the reproductive phenology of plants, yet we know little about which environmental factors contribute to interspecific variation in responses and their effects on fitness. • We integrate data from a 43-year record of first flowering for six species in subalpine Colorado meadows with a 3-year snow manipulation experiment on the perennial forb Boechera stricta (Brassicaceae) from the same site. We analyze shifts in the onset of flowering...

Data from: Phylogenetic patterns of trait and trait plasticity evolution: Insights from amphibian embryos

Rick Relyea, Patrick R. Stephens, Lisa N. Barrow, Andrew Blaustein, Paul Bradley, Julia Buck, Ann Chang, Brian I Crother, James Collins, Julia Earl, Stephanie Gervasi, Jason T. Hoverman, Olliver Hyman, Emily Claire Moriarty Lemmon, Thomas Luhring, Moses Michelsohn, Christopher M. Murray, Steven Price, Raymond Semlitsch, Andy Sih, Aaron Stoler, Nick VandenBroek, Alexa Warwick, Greta Wengert, John Hammond … & Stephanie S. Gervasi
Environmental variation favors the evolution of phenotypic plasticity. For many species, we understand the costs and benefits of different phenotypes, but we lack a broad understanding of how plastic traits evolve across large clades. Using identical experiments conducted across North America, we examined prey responses to predator cues. We quantified five life history traits and the magnitude of their plasticity for 23 amphibian species/populations (spanning three families and five genera) when exposed to no cues,...

Data from: An experimental test of the relationship between yolk testosterone and the social environment in a colonial passerine

Alexandra B. Bentz, Victoria A. Andreasen & Kristen J. Navara
Maternal hormones can be transferred to offspring during prenatal development in response to the maternal social environment, and may adaptively alter offspring phenotype. For example, numerous avian studies show that aggressive competition with conspecifics tends to result in females allocating more testosterone to their egg yolks, and this may cause offspring to have more competitive phenotypes. However, deviations from this pattern of maternal testosterone allocation are found, largely in studies of colonial species, and have...

Data from: Individual variation in the transmission of ultraviolet radiation in the young adult eye.

Billy Hammond, Lisa Hammond-Renzi, Billy R. Hammond & Lisa Renzi-Hammond
Objectives: Data obtained mostly from animal models and ex vivo samples show that a small portion of ultraviolet light (UV, 300-400 nm) penetrates the cornea and crystalline lens and impinges on the human retina. UV transmission to the retina appears to be unique to the young and some older pseudophakes. In this study, we determine the variation in UV transmission in a relatively homogenous sample of young adults. Methods: 42 subjects were tested (M =...

Data from: Genetic diversity, infection prevalence, and possible transmission routes of Bartonella spp. in vampire bats

Daniel J. Becker, Laura M. Bergner, Alexandra B. Bentz, Richard J. Orton, Sonia Altizer & Daniel G. Streicker
Bartonella spp. are globally distributed bacteria that cause endocarditis in humans and domestic animals. Recent work has suggested bats as zoonotic reservoirs of some human Bartonella infections; however, the ecological and spatiotemporal patterns of infection in bats remain largely unknown. Here we studied the genetic diversity, prevalence of infection across seasons and years, individual risk factors, and possible transmission routes of Bartonella in populations of common vampire bats (Desmodus rotundus) in Peru and Belize, for...

Data from: Variation in mandible development and its relationship to dependence on parents across burying beetles

Kyle M. Benowitz, Madeline E. Sparks, Elizabeth C. McKinney, Patricia J. Moore & Allen J. Moore
Background: In species with parental care, there is striking variation in offspring dependence at birth, ranging from feeding independence to complete dependency on parents for nutrition. Frequently, highly dependent offspring further evolve reductions or alterations of morphological traits that would otherwise promote self-sufficiency. Here, we examine evidence for morphological evolution associated with dependence in burying beetles (Nicrophorus spp.), in which dependence upon parents appears to have several independent origins. In many species precocial first instar...

Data from: Necrobiome framework for bridging decomposition ecology of autotrophically and heterotrophically derived organic matter

Mark Eric Benbow, Philip S. Barton, Michael D. Ulyshen, James C. Beasley, Travis L. DeVault, Michael S. Strickland, Jeffery K. Tomberlin, Heather R. Jordan, Jennifer L. Pechal & M. Eric Benbow
Decomposition contributes to global ecosystem function by contributing to nutrient recycling, energy flow and limiting biomass accumulation. The decomposer organisms influencing this process form diverse, complex, and highly dynamic communities that often specialize on different plant or animal resources. Despite performing the same net role, there is a need to conceptually synthesize information on the structure and function of decomposer communities across the spectrum of dead plant and animal resources. A lack of synthesis has...

Data from: Large birds travel farther in homogeneous environments

Marlee A. Tucker, Olga Alexandrou, Bierregaard Jr., Richard O., Keith L. Bildstein, Katrin Böhning-Gaese, Chloe Bracis, John N. Brzorad, Evan R. Buechley, David Cabot, Justin M. Calabrese, Carlos Carrapato, André Chiaradia, Lisa C. Davenport, Sarah C. Davidson, Mark Desholm, Christopher R. DeSorbo, Robert Domenech, Peter Enggist, William F. Fagan, Nina Farwig, Wolfgang Fiedler, Christen H. Fleming, Alastair Franke, John M. Fryxell, Clara García-Ripollés … & João Paulo Silva
Aim: Animal movement is an important determinant of individual survival, population dynamics, and ecosystem structure and function. Yet it is still unclear how local movements are related to resource availability and the spatial arrangement of resources. Using resident bird species and migratory bird species outside of the migratory period, we examined how the distribution of resources affect the movement patterns of both large terrestrial birds (e.g., raptors, bustards, hornbills) and waterbirds (e.g., cranes, storks, ducks,...

Data from: Assessing the contributions of intraspecific and environmental sources of infection in urban wildlife: Salmonella enterica and white ibis as a case study

Daniel J. Becker, Claire S. Teitelbaum, Maureen H. Murray, Shannon E. Curry, Catharine N. Welch, Taylor Ellison, Henry C. Adams, R. Scott Rozier, Erin K. Lipp, Sonia M. Hernandez, Sonia Altizer & Richard J. Hall
Conversion of natural habitats into urban landscapes can expose wildlife to novel pathogens and alter pathogen transmission pathways. Because transmission is difficult to quantify for many wildlife pathogens, mathematical models paired with field observations can help select among competing transmission pathways that might operate in urban landscapes. Here we develop a mathematical model for the enteric bacteria Salmonella enterica in urban-foraging white ibis (Eudocimus albus) in south Florida as a case study to determine (i)...

Data from: Social living simultaneously increases infection risk and decreases the cost of infection

Vanessa O. Ezenwa, Katherine E.L. Worsley-Tonks & Katherine E. L. Worsley-Tonks
Elevated parasite infection risk is considered to be a near universal cost of social living. However, living in groups may also provide benefits that reduce the negative impacts of infection. These potential ‘tolerance’ benefits of living socially are theoretically possible, but have rarely been described. In this study, we used an anthelmintic treatment experiment in wild Grant’s gazelles (Nanger granti), who are commonly infected with gastrointestinal nematodes (GIN), to show that social living confers both...

Data from: Free‐moving artificial eggs containing temperature loggers reveal remarkable within‐clutch variance in incubation temperature

Sydney F. Hope, Sarah E. DuRant, John J. Hallagan, Michelle L. Beck, Robert A. Kennamer & William A. Hopkins
Incubation is a crucial aspect of avian parental care and measuring incubation temperature in the wild can improve our understanding of life history tradeoffs and inform conservation efforts. However, there are challenges associated with measuring the temperature of eggs in natural nests. Most studies to date have measured incubation temperature by using a single, stationary logger in each nest. However, real eggs are rotated and moved throughout the nest by the parent during the incubation...

Data from: Rapid change in host specificity in a field population of the biological control organism Pasteuria penetrans

Chang Liu, Amanda Kyle Gibson, Patricia Timper, Levi T. Morran, R. Scott Tubbs & R Scott Tubbs
In biological control, populations of both the biological control agent and the pest have the potential to evolve, and even to coevolve. This feature marks the most powerful and unpredictable aspect of biological control strategies. In particular, evolutionary change in host specificity of the biological control agent could increase or decrease its efficacy. Here, we tested for change in host specificity in a field population of the biological control organism Pasteuria penetrans. Pasteuria penetrans is...

Data from: A study of the transit amplification divisions during spermatogenesis in Oncopeltus fasciatus to assess plasticity in sperm numbers or sperm viability under different diets

Ashley E. Duxbury, Brandie Weathersby, Zachary Sanchez & Patricia J. Moore
Oncopeltus fasciatus males fed the ancestral diet of milkweed seeds prioritize reproduction over lifespan as evidenced by higher rates of fertility and shorter lifespans than males from the same population fed the adapted diet of sunflower seeds. We examined the proximate mechanisms by which milkweed-fed males maintained late-life fertility. We tested the hypothesis that older milkweed-fed males maintained fertility by producing more, higher quality sperm. Our results, that older males have more sperm, but their...

Registration Year

  • 2018

Resource Types

  • Dataset


  • University of Georgia
  • Indiana University Bloomington
  • University of Florida
  • University of Alberta
  • University of Missouri
  • Emory University
  • University of Kansas
  • University of Montana
  • University of California System
  • The Ohio State University
  • University of Glasgow
  • Oregon State University
  • University of Minnesota
  • North Carolina Museum of Natural Sciences
  • University of Guelph